Line of Descent by Adam Oyebanji (Science Fiction)

An engaging space opera serving as a prequel to Oyebanji’s last book — Breaking Day. The action opens in the ~100th year of a 130 year voyage — humanity’s first bid for the stars. The inhabitants are Generation 5 of a carefully controlled population program, and tensions around whose “lines of descent” will be propagated are high. Reproductive rights, privacy, surveillance, and secrecy are some of the issues that have caused serious rifts in the population, leading to strong feelings and increasingly dangerous actions. And now the Captain is nearing his termination date and a vicious battle between the two candidates for the position will remind most of us of our own recent electoral “conflict.”

I like Oyebanji’s writing — it is clean and accessible, and encompasses technical detail, action, and cultural norms with equal fluidity (and equal time). The idea of a “generation” ship evolving different customs, conventions, and beliefs is not a new one, but I enjoyed his take on where the fracture points might occur and what issues could lead to polarization and rupture … and how the “government” might tackle an attempt at reconciliation given the limitations of a truly isolated environment. Plenty of obvious parallels to issues today.

Interesting and relatable characters and faction / hierarchical relationships; good world-building including mechanisms of recycling, decay, and the impact of unavoidable accidents in such a removed environment; and a plot equally comfortable with action and personality. This is Oyebanji’s 5th book in as many years, and I have enjoyed all but one of them (not sure what happened with that one!).

I appreciated Oyebanji’s bio, which you can find on his webpage — adamoyebanji.com — shows his humor and his interesting background!

Thank you to DAW and NetGalley for providing an advance copy of this book in exchange for my honest review. The book will be published on November 17th, 2026.